flag (Noun) — Emblem usually consisting of a rectangular piece of cloth of distinctive design.
flag (Noun) — A listing printed in all issues of a newspaper or magazine (usually on the editorial page) that gives the name of the publication and the names of the editorial staff, etc..
flag (Noun) — Plants with sword-shaped leaves and erect stalks bearing bright-coloured flowers composed of three petals and three drooping sepals.
flag (Noun) — A rectangular piece of fabric used as a signalling device.
flag (Noun) — Flagpole used to mark the position of the hole on a golf green.
flag (Noun) — Stratified stone that splits into pieces suitable as paving stones.
flag (Noun) — A conspicuously marked or shaped tail.
flag (Noun) — (computer science) an option otherwise modifying the action of a command or program.
flag (Verb) — Communicate or signal with a flag.
flag (Verb) — Provide with a flag. ex. "Flag this file so that I can recognize it immediately"
flag (Verb) — Droop, sink, or settle from or as if from pressure or loss of tautness.
flag (Verb) — Decorate with flags. ex. "the building was flagged for the holiday"
flag (Verb) — Become less intense.